INVALID SERIAL NUMBER in Samsung Redemption

[jbl14]

I bought a 970 Evo Plus 1TB, Samsung has a cashback promo for SSD's. But when I type the serial number on Samsung Redemption site. It says the Serial number/IMEI is invalid. Does anyone experience the same?

I have emailed promos@samsung.au multiple times already but no luck on reply.

Can anyone confirm that this cashback promo is legit?

[Mg_44]

I'm having this problem when I try to redeem the Samsung galaxy watch I've emailed Samsung numerous times and contacted via Facebook messages and I'm on a sim plan for a watch I can not redeem